1. Explain the difference between hormone organization and hormone activitation.

2. It was hypothesized that testosterone levels can affect aggressiveness in red-winged blackbirds.

a) What are two appropriate alternative hypotheses for the experiment that Searcy and Wingfield conducted on captive male birds?

b) The authors conclude that "The greater aggressiveness of males relative to females can therefore be explained by sexual selection." Explain how sexual selection could have caused greater aggressiveness of males relative to females.

3. Congenital adrenal hyperplasia has several effects on the developing child. Which effect is relevant to our topic in this class? Explain.

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